. >>> this weekend, you can talk with oklahoma senator tom coburn about the fiscal cliff, affordable care act, and the future of the republican party on senator wrote several books and reports like "the debt bomb," and join our three hour conversation with calls, e-mails, tweets, and facebook comments for senator tom coburn for booktv's "in-depth" on c-span2. >>> next, john roberts on challenges and surprises he had on the high court. last month, he spoke for an hour with students about the supreme court and constitutional law. [applause] >> thank you very much. thank you, and thank you, david, for that gracious introduction, and all of you for a very, very warm welcome. this is my first visit to rice, and i'm already glad that i came. president lee told you i can't talk about anything current, future, or past. [laughter] my remarks will be brief. [laughter] i had the pleasure of knowing david for 35 years. as he mentioned, he was the president back then too of the harvard law review. he's used to holding the reigns of power. a chief justice also holds the reigns of power. the only d